making your own range function in python

1def range_by(starting_number, ending_number):
2    #sequence = [starting_number]
3    sequence = []
4    while starting_number < ending_number:
5        sequence.append(starting_number)
6        starting_number += 1
7        
8    return sequence
9
10print(range_by(-3,6))

1def range_with_step(start_num,end_num,step_num):
2    sequence2 = [start_num]
3    while start_num < end_num:
4        start_num += step_num
5        sequence2.append(start_num)
6    return sequence2
7print(range_with_step(0,6,3))